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[opt](nereids) use binary search to prune partitions (apache#44586)
use binary search to speed up prune partitions. test: datetime partition column which range from 2020-07-02 to 2024-11-13, one date for one partition, query one partition for example `dt = '2024-01-02'`, this pr can speed up from QPS 160 to QPS 610
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...core/src/main/java/org/apache/doris/common/cache/NereidsSortedPartitionsCacheManager.java
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| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
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| package org.apache.doris.common.cache; | ||
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| import org.apache.doris.catalog.DatabaseIf; | ||
| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.catalog.OlapTable; | ||
| import org.apache.doris.catalog.PartitionInfo; | ||
| import org.apache.doris.catalog.PartitionItem; | ||
| import org.apache.doris.common.Config; | ||
| import org.apache.doris.common.ConfigBase.DefaultConfHandler; | ||
| import org.apache.doris.datasource.CatalogIf; | ||
| import org.apache.doris.nereids.rules.expression.rules.MultiColumnBound; | ||
| import org.apache.doris.nereids.rules.expression.rules.PartitionItemToRange; | ||
| import org.apache.doris.nereids.rules.expression.rules.SortedPartitionRanges; | ||
| import org.apache.doris.nereids.rules.expression.rules.SortedPartitionRanges.PartitionItemAndId; | ||
| import org.apache.doris.nereids.rules.expression.rules.SortedPartitionRanges.PartitionItemAndRange; | ||
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| import com.github.benmanes.caffeine.cache.Cache; | ||
| import com.github.benmanes.caffeine.cache.Caffeine; | ||
| import com.google.common.collect.Range; | ||
| import lombok.AllArgsConstructor; | ||
| import lombok.Data; | ||
| import org.apache.hadoop.util.Lists; | ||
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|
||
| import java.lang.reflect.Field; | ||
| import java.time.Duration; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Map.Entry; | ||
| import java.util.Optional; | ||
|
|
||
| /** | ||
| * This cache is used to sort the table partitions by range, so we can do binary search to skip | ||
| * filter the huge numbers of partitions, for example, the table partition column is `dt date` | ||
| * and one date for one partition, range from '2017-01-01' to '2025-01-01', for partition predicate | ||
| * `where dt = '2024-12-24'`, we can fast jump to '2024-12-24' within few partition range comparison, | ||
| * and the QPS can be improved | ||
| */ | ||
| public class NereidsSortedPartitionsCacheManager { | ||
| private volatile Cache<TableIdentifier, PartitionCacheContext> partitionCaches; | ||
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| public NereidsSortedPartitionsCacheManager() { | ||
| partitionCaches = buildCaches( | ||
| Config.cache_partition_meta_table_manage_num, | ||
| Config.expire_cache_partition_meta_table_in_fe_second | ||
| ); | ||
| } | ||
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| public Optional<SortedPartitionRanges<?>> get(OlapTable table) { | ||
| DatabaseIf<?> database = table.getDatabase(); | ||
| if (database == null) { | ||
| return Optional.empty(); | ||
| } | ||
| CatalogIf<?> catalog = database.getCatalog(); | ||
| if (catalog == null) { | ||
| return Optional.empty(); | ||
| } | ||
| TableIdentifier key = new TableIdentifier( | ||
| catalog.getName(), database.getFullName(), table.getName()); | ||
| PartitionCacheContext partitionCacheContext = partitionCaches.getIfPresent(key); | ||
| if (partitionCacheContext == null) { | ||
| return Optional.of(loadCache(key, table)); | ||
| } | ||
| if (table.getId() != partitionCacheContext.tableId | ||
| || table.getVisibleVersion() != partitionCacheContext.tableVersion) { | ||
| partitionCaches.invalidate(key); | ||
| return Optional.of(loadCache(key, table)); | ||
| } | ||
| return Optional.of(partitionCacheContext.sortedPartitionRanges); | ||
| } | ||
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| private SortedPartitionRanges<?> loadCache(TableIdentifier key, OlapTable olapTable) { | ||
| PartitionInfo partitionInfo = olapTable.getPartitionInfo(); | ||
| Map<Long, PartitionItem> allPartitions = partitionInfo.getIdToItem(false); | ||
| List<Entry<Long, PartitionItem>> sortedList = Lists.newArrayList(allPartitions.entrySet()); | ||
| List<PartitionItemAndRange<?>> sortedRanges = Lists.newArrayListWithCapacity(allPartitions.size()); | ||
| List<PartitionItemAndId<?>> defaultPartitions = Lists.newArrayList(); | ||
| for (Entry<Long, PartitionItem> entry : sortedList) { | ||
| PartitionItem partitionItem = entry.getValue(); | ||
| Long id = entry.getKey(); | ||
| if (!partitionItem.isDefaultPartition()) { | ||
| List<Range<MultiColumnBound>> ranges = PartitionItemToRange.toRanges(partitionItem); | ||
| for (Range<MultiColumnBound> range : ranges) { | ||
| sortedRanges.add(new PartitionItemAndRange<>(id, partitionItem, range)); | ||
| } | ||
| } else { | ||
| defaultPartitions.add(new PartitionItemAndId<>(id, partitionItem)); | ||
| } | ||
| } | ||
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| sortedRanges.sort((o1, o2) -> { | ||
| Range<MultiColumnBound> span1 = o1.range; | ||
| Range<MultiColumnBound> span2 = o2.range; | ||
| int result = span1.lowerEndpoint().compareTo(span2.lowerEndpoint()); | ||
| if (result != 0) { | ||
| return result; | ||
| } | ||
| result = span1.upperEndpoint().compareTo(span2.upperEndpoint()); | ||
| return result; | ||
| }); | ||
| SortedPartitionRanges<?> sortedPartitionRanges = new SortedPartitionRanges( | ||
| sortedRanges, defaultPartitions | ||
| ); | ||
| PartitionCacheContext context = new PartitionCacheContext( | ||
| olapTable.getId(), olapTable.getVisibleVersion(), sortedPartitionRanges); | ||
| partitionCaches.put(key, context); | ||
| return sortedPartitionRanges; | ||
| } | ||
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| private static Cache<TableIdentifier, PartitionCacheContext> buildCaches( | ||
| int sortedPartitionTableManageNum, int expireSortedPartitionTableInFeSecond) { | ||
| Caffeine<Object, Object> cacheBuilder = Caffeine.newBuilder() | ||
| // auto evict cache when jvm memory too low | ||
| .softValues(); | ||
| if (sortedPartitionTableManageNum > 0) { | ||
| cacheBuilder = cacheBuilder.maximumSize(sortedPartitionTableManageNum); | ||
| } | ||
| if (expireSortedPartitionTableInFeSecond > 0) { | ||
| cacheBuilder = cacheBuilder.expireAfterAccess(Duration.ofSeconds(expireSortedPartitionTableInFeSecond)); | ||
| } | ||
|
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| return cacheBuilder.build(); | ||
| } | ||
|
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| public static synchronized void updateConfig() { | ||
| Env currentEnv = Env.getCurrentEnv(); | ||
| if (currentEnv == null) { | ||
| return; | ||
| } | ||
| NereidsSortedPartitionsCacheManager cacheManager = currentEnv.getSortedPartitionsCacheManager(); | ||
| if (cacheManager == null) { | ||
| return; | ||
| } | ||
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| Cache<TableIdentifier, PartitionCacheContext> caches = buildCaches( | ||
| Config.cache_partition_meta_table_manage_num, | ||
| Config.expire_cache_partition_meta_table_in_fe_second | ||
| ); | ||
| caches.putAll(cacheManager.partitionCaches.asMap()); | ||
| cacheManager.partitionCaches = caches; | ||
| } | ||
|
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| @Data | ||
| @AllArgsConstructor | ||
| private static class TableIdentifier { | ||
| public final String catalog; | ||
| public final String db; | ||
| public final String table; | ||
| } | ||
|
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| private static class PartitionCacheContext { | ||
| private final long tableId; | ||
| private final long tableVersion; | ||
| private final SortedPartitionRanges sortedPartitionRanges; | ||
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| public PartitionCacheContext( | ||
| long tableId, long tableVersion, SortedPartitionRanges sortedPartitionRanges) { | ||
| this.tableId = tableId; | ||
| this.tableVersion = tableVersion; | ||
| this.sortedPartitionRanges = sortedPartitionRanges; | ||
| } | ||
|
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| @Override | ||
| public String toString() { | ||
| return "PartitionCacheContext(tableId=" | ||
| + tableId + ", tableVersion=" + tableVersion | ||
| + ", partitionNum=" + sortedPartitionRanges.sortedPartitions.size() + ")"; | ||
| } | ||
| } | ||
|
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| // NOTE: used in Config.cache_partition_meta_table_manage_num.callbackClassString and | ||
| // Config.expire_cache_partition_meta_table_in_fe_second.callbackClassString, | ||
| // don't remove it! | ||
| public static class UpdateConfig extends DefaultConfHandler { | ||
| @Override | ||
| public void handle(Field field, String confVal) throws Exception { | ||
| super.handle(field, confVal); | ||
| NereidsSortedPartitionsCacheManager.updateConfig(); | ||
| } | ||
| } | ||
| } |
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